<template>
    <div class="recommend" ref="recommend">
        <scroll ref="scroll" class="recommend-content" :data="discList">
            <div>
                <div class="slider-wrapper" v-if="recommends.length">
                    <slider>
                        <div v-for="(item, index) in recommends" :key="index">
                            <a :href="item.linkUrl">
                                <img class="needsclick" @load="loadImg" :src="item.picUrl">
                            </a>
                        </div>
                    </slider>
                </div>
                <div class="recommend-list">
                    <h1 class="list-title">热门歌单推荐</h1>
                    <ul>
                        <li @click="selectItem(item)" v-for="(item, index) in discList" class="item" :key="index">
                            <div class="icon">
                                <img width="60" height="60" v-lazy="item.imgurl" alt="">
                            </div>
                            <div class="text">
                                <h2 class="name" v-html="item.creator.name"></h2>
                                <p class="desc" v-html="item.dissname"></p>
                            </div>
                        </li>
                    </ul>
                </div>
            </div>
            <div class="loading-container" v-show="!discList.length">
                <loading></loading>
            </div>
        </scroll>
        <router-view></router-view>
    </div>
</template>

<script type="text/ecmascript-6">
    import Loading from 'base/loading/loading'
    import Scroll from 'base/scroll/scroll'
    import Slider from 'base/slider/slider'
    import axios from 'axios'
    import { getDiscList } from 'api/recommend'
    import { ERR_OK } from 'api/config'
    import { playlistMixin } from 'common/js/mixin'
    import { mapMutations } from 'vuex'
    
    export default {
        mixins: [ playlistMixin ],
        data() {
            return {
                recommends: [],
                discList: []
            }
        },
        created() {
            setTimeout(() => {
                this._getRecommend()
            }, 20)
            this._getDiscList()
        },
        components: { Slider, Scroll, Loading },
        methods: {
            selectItem(item) {
                this.$router.push({
                    path: `/recommend/${item.dissid}`
                })
                this.setDisc(item)
            },
            // 给底部预留给mini播放器的空间
            handlePlaylist(playlist) {
                const bottom = playlist.length > 0 ? '60px' : ''
                this.$refs.recommend.style.bottom = bottom
                this.$refs.scroll.refresh()
            },
            _getRecommend() {
                // 由于QQ音乐推荐列表api有问题，暂且用mock数据代替
                // getRecommend().then((res) => {
                //     console.log(res)
                //     if (res.code === ERR_OK) {
                //         this.recommends = res.data.slider
                //     }
                // })

                // axios访问本地mock数据
                axios.get('/static/mock/recommend/recommend.json').then((res) => {
                    this.recommends = res.data.data.slider
                })
            },
            _getDiscList() {
                getDiscList().then((res) => {
                    if (res.data.code === ERR_OK) {
                        this.discList = res.data.data.list
                    }
                })
            },
            loadImg() {
                if (!this.checkLoading) { 
                    this.$refs.scroll.refresh()
                    this.checkLoading = true
                }
            },
            ...mapMutations({
                setDisc: 'SET_DISC'
            })
        }
    }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"

  .recommend
    position: fixed
    width: 100%
    top: 88px
    bottom: 0
    .recommend-content
      height: 100%
      overflow: hidden
      .slider-wrapper
        position: relative
        width: 100%
        overflow: hidden
      .recommend-list
        .list-title
          height: 65px
          line-height: 65px
          text-align: center
          font-size: $font-size-medium
          color: $color-theme
        .item
          display: flex
          box-sizing: border-box
          align-items: center
          padding: 0 20px 20px 20px
          .icon
            flex: 0 0 60px
            width: 60px
            padding-right: 20px
          .text
            display: flex
            flex-direction: column
            justify-content: center
            flex: 1
            line-height: 20px
            overflow: hidden
            font-size: $font-size-medium
            .name
              margin-bottom: 10px
              color: $color-text
            .desc
              color: $color-text-d
      .loading-container
        position: absolute
        width: 100%
        top: 50%
        transform: translateY(-50%)
</style>